期刊
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
卷 44, 期 42, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1751-8113/44/42/425402
关键词
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资金
- FCT [CERN/FP/116358/2010]
- Centro de Fisica do Porto
In this paper, we construct analytical self-dual soliton solutions in (1+1) dimensions for two families of models which can be seen as generalizations of the sine-Gordon system but where the kinetic term is non-canonical. For that purpose we use a projection method applied to the sine-Gordon soliton. We focus our attention on the wall and lump-like soliton solutions of these k-field models. These solutions and their potentials reduce to those of the Klein-Gordon kink and the standard lump for the case of a canonical kinetic term. As we increase the nonlinearity on the kinetic term the corresponding potentials get modified and the nature of the soliton may change, in particular, undergoing a topology modification. The procedure constructed here is shown to be a sort of generalization of the deformation method for a specific class of k-field models.
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